Defensive publication

ABSTRACT

PHOTOGRAPHIC SILVER SALT COMPOSITION, SUCH AS SILVER HALIDE EMULSIONS, CONTAINING A WEIGHTED HYDROQUINONE DEVELOPING AGENT, SUCH AS T-BUTYL HYDROQUINONE OR CYCLOHEXYLHYDROQUINONE, AND AN ALKALINE-ACTIVATABLE STABILIZER PRECURSOR, SUCH AS A THIURONIUM SALT, HAVE GOOD KEEPING QUALITIES AND CAN BE RAPIDLY PROCESSED BY ALKALINE ACTIVATION.

DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICE Published at therequest of the applicant or owner in accordance with the Notice of Dec.16, 1969, 869 O.G. 687. The abstracts of Defensive Publicationapplications are identified by distinctly numbered series and arearranged chronologically. The heading of each abstract indicates thenumber of pages of specification, including claims and sheets ofdrawings contained in the application as originally filed. The files ofthese applications are available to the public for inspection andreproduction may be purchased for 30 cents a sheet. 4

Defensive Publication applications have not been examined as to themerits of alleged invention. The Patent Oifice makes no assertion as tothe novelty of the disclosed subject matter.

PUBLISHED JUNE 22, 1971 T887,024 PHOTOGRAPHIC EMULSIONS FOR RAPIDPROCESSING Grant M. Haist, Rochester, David A. Pupo, Churchville, andJames R. King, Webster, N.Y. (all of 166A Lake Ave., Rochester, NY.14615) Filed May 28, 1970, Ser. No. 41,574 Int. Cl. E03c 1/06, 1/48,5/30 US. Cl. 96-95 No Drawing. 22 Pages Specification Photographicsilver salt compositions, such as silver halide emulsions, containing aweighted hydroquinone developing agent, such as t-butyl hydroquinone orcyclohexylhydroquinone, and an alkaline-activatable stabilizerprecursor, such as a thiuronium salt, have good keeping qualities andcan be rapidly processed by alkaline activation.

